1. AIDS and drug addicts in Europe;Ancelle-Park, R.; Brunet, J.B.; Downs, A.;Lancet,1987
2. Heterosexual transmission of HIV;Piot, P.; Kreiss, J.K.; Ndinya-Achola, J.O.;AIDS,1987
3. Centers for Disease Control. CDC classification system for human T-lymphotropic virus type III/lymphadenopathy-associated irus infections;MMWR,1986
4. Case-control studies; design, conduct, analysis;Schlesselman, J.,1982
5. Genital ulceration as a risk factor for human immunodeficiency virus infection;Greenblatt, R.U.; Lukehart, S.L.; Plummer, F.A.;AIDS,1988